Fake an Injury During a Down

[Reffing Rev.]

PAT A lines up with a bunch formation of receivers out to the right. Immediately with the snap one of those receivers falls to ground screaming in pain, everyone kind of stops and stairs at him as the QB throws the ball to the TE on the left side for a 2 point. The receiver then gets up cheering and chest bumping over to the sideline.

I ruled it illegal with the philosophy that "if it looks wrong, it probably is" Trying to find a rule to support the decision.

IP rule says a player lying on the ground at or before the snap, not after the snap.